99 Sumner St #321

Taxes: $6,419.91 (2026)

About this home

Residence 321 at The Mark, offers sophisticated waterfront living with panoramic harbor and skyline views. This spacious 2 bedroom + den home features oversized windows, a private balcony with stunning sunset views, sleek contemporary design complemented by custom motorized window treatments throughout. The open-concept layout is ideal for modern living and entertaining. Rarely available, the residence also includes TWO garage parking spaces and TWO private storage units. Residents enjoy luxury amenities including 24/7 concierge, fitness center with flex studio, harbor view terrace with grills and fire pits, resident lounge, golf simulator, conference room, and pet spa. Located in East Boston’s vibrant waterfront neighborhood, The Mark is just a 2-minute walk to Maverick Station on the MBTA Blue Line, steps from water taxis and the MBTA Ferry, and minutes from Logan Airport. Enjoy a waterfront lifestyle with refined living, exceptional convenience, and picture-perfect views.

Property details

Sewer

Private

Style

Mid-Rise

Water

City/Town Water

Cooling

Central Air, Individual, Unit Control

Heating

Central Heat, Forced Air, Individual, Hot Air Gravity

Flooring

Wood, Tile

Appliances

Range, Dishwasher, Disposal, Microwave, Refrigerator, Freezer, Washer, Dryer

Waterfront

Harbor

Master Bath

Yes

Garage

Attached, Under, Garage Door Opener

Electric

EV Charging Station

Waterview Features

Harbor